Experimental study on flow boiling characteristics in a high aspect ratio vertical rectangular mini-channel under low heat and mass flux
Experimental study on flow boiling characteristics in a high aspect ratio vertical rectangular mini-channel under low heat and mass flux
复制标题
低热质量通量下大深宽比垂直矩形微通道流动沸腾特性实验研究
DOI：
10.1016/j.expthermflusci.2018.05.019
复制
发表时间：
2018-11
影响因子：
3.2
通讯作者：
Xu XW
中科院分区：
文献类型：
--
作者：
Liu Jiayao;Liu Jinping;Li Rixin;Xu Xiongwen;Liu Jinping;Xu Xiongwen;Liu Jinping;Xu XW
研究了R600 a、R227 ea和R245 fa在中高宽比（宽/高= 6.25，横截面积为1.6 mm × 10 mm，长520 mm）垂直矩形通道内的流动特性和流动沸腾特性。实验结果是在饱和温度为27.5、36.6和45.5 °C，相对较低的热通量和质量通量分别为3.60至10.50 kW/m2和32.20至116.8 kg/m2 s的情况下获得的。确定了五种流动类型，并绘制了流型图。观察到前波，并检测到最小化的气泡，从段塞到搅拌环形液膜产生。分析了热通量、质量通量、干度和饱和压力对流动沸腾的影响。对于所有三种测试的制冷剂，热通量和饱和压力被发现有显着的传热系数的影响，而质量通量和蒸汽干度的影响可以忽略不计。根据实验数据对现有的11个关联式进行了比较评价。维组关联式具有较好的上级预测性能，并对竖直小通道内的低热通量流动沸腾进行了预测。
This study investigates the flow patterns and flow boiling characteristics of R600a, R227ea and R245fa in a visualized vertical rectangular mini-channel, with a moderate-high aspect ratio (width/height = 6.25, cross-section area of 1.6 mm × 10 mm and length of 520 mm. The experimental results are obtained at saturation temperatures of 27.5, 36.6 and 45.5 °C, with relatively low heat and mass flux ranging from 3.60 to 10.50 kW/m2and 32.20 to 116.8 kg/m2s, respectively. Five flow types are identified and a flow pattern map is plotted. Front waves are observed and minimized bubbles are detected, generated from the slug to the churn-annular liquid film. The effects of heat flux, mass flux, vapor quality and saturation pressure on flow boiling are investigated and analysed. For all three tested refrigerants, the heat flux and saturation pressure are found to have a significant influence on the heat transfer coefficient, while the effects of the mass flux and vapor quality are negligible. Eleven existing correlations are comparatively evaluated based on the experimental data. The dimension groups correlation exhibits superior predicting performance, and a new correlation is developed for low heat and fluxes flow boiling in vertical minichannel.
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DOI：
10.1016/j.ijheatmasstransfer.2010.01.038
发表时间：
2010-05
影响因子：
5.2
作者：
C. Tibiriçá;G. Ribatski
通讯作者：
C. Tibiriçá;G. Ribatski
低温板翅式换热器内碳氢化合物混合物的上流沸腾传热系数的测量和预测
DOI：
10.1016/j.ijheatmasstransfer.2018.02.007
发表时间：
2018-08
影响因子：
5.2
作者：
Li Rixin;Liu Jinping;Liu Jiayao;Xu Xiongwen;Liu Jinping;Xu Xiongwen;Liu Jinping;Xu XW
通讯作者：
Xu XW
影响因子：
3.8
作者：
T. Tran;M. W. Wambsganss
通讯作者：
T. Tran;M. W. Wambsganss
影响因子：
2.2
作者：
J. Thome;V. Dupont;A. Jacobi
通讯作者：
J. Thome;V. Dupont;A. Jacobi
影响因子：
--
作者：
KANDLIKAR, SG
通讯作者：
KANDLIKAR, SG